Diabetes; When the human engine does not properly burn its fuel

Metropolitan Life, 1925. 6 pp. Image of man fueling a furnace on front cover. Discusses the fuel our bodies need, diabetes - its signs and causes, how insulin helps the diabetic and how to guard against diabetes. One of the ways to guard against diabetes is "Infections of teeth, tonsils and other organs should be promptly treated and removed". Hmmm.. Measures 7 3/4" x 5 3/8